Should a man be required to support a child he did not want?

Say two people hook up at some random event. They are not in love. They do not have a relationship. Maybe the guy doesn’t even know the chick’s last name. But the condom breaks and she gets knocked up.

Should he be required to pay for an abortion?

Should he be required to pay for half an abortion?

Should he be required to support the proceeds of a broken condom with a stranger for the rest of his life or at least 18 years and nine months?

What if the chick put pinholes in the condom because she knew the guy had some money, but the kid is definitely his genetics?

Is there a point at which the man stops being responsible for a choice someone else makes or does he lose the right to make further choices when he agrees to have sexual intercourse?